Recently, boilers for long burning on wood for the house have become very popular. They are purchased by those who live all year round in a private house, at the cottage or in their own cottage .
Pros and Cons of Boilers
A heating boiler on long burning firewood has both its pluses and minuses. The advantages of the unit include the following:
- at its use the cost price of thermal energy decreases in comparison with other kinds of heating devices;
- no need for frequent refueling. In some models it is enough to put firewood once every three to four hours. You can also use different types of fuel or combine them. However, it should be taken into account: in order to use a solid fuel boiler of long burning on firewood to the fullest, it is necessary to stock up with high-quality fuel material;
- The device operates in an autonomous mode and does not depend on other communications;
- the cost of firewood is much less than gas.
Along with the mass of merits, the boiler of long burning on wood has its drawbacks, namely:
- in the minus column the first line is taken by a high price directly on the device itself;
- Another disadvantage is the low efficiency, which is only 79 to 89%;
- leave unattended working boiler is strictly prohibited. This causes little difficulty, because in practice it is not rendered irrevocably;
- the last drawback is the lack of the ability to regulate the temperature.
Principle of operation of the boiler
The principle of the boiler's long burning on wood is based on the limited supply of air. The process of heating begins with the smoldering of logs in the furnace. Due to the minimum amount of air, the time of decay increases. Because of this, the fuel does not burn in minutes, and it lasts for a long time. Due to the smoldering of gas is released, which has a high calorific value. In the combustion chamber, it is burned by oxygen. Non-toxic, non-flammable smoke is released into the environment, because all dangerous substances have already been recycled.
The unit operates on the principle of upper combustion, that is, first the upper layer burns. Then the flame goes down. As far as one tab is enough, it depends on the model of the device. There are options that function without the addition of firewood for up to 3 days.
Types of boilers
There are such types of aggregates:
- with an elongated furnace;
- with upper combustion;
- pyrolysis.
The first two types are distinguished by a simple principle of operation and design. Pyrolysis is more difficult to operate, but it can work for days. In addition, the instruments differ in the dimensions of the combustion chamber, the type of construction, the material of manufacture.
Experts advise choosing for cottages and private cottages boilers with small combustion chambers. If the furnace is larger, the efficiency will increase. But together with it the size of the unit will also increase.
In the cottage, where they will live all year round, it is better to install a two-circuit boiler. Then it will be possible to combine the heating of the premises and with the supply of hot water.
Econom boilers of long burning on wood
Econom boilers of long burning on wood belong to the classical type. Control over the operation of the device is carried out using a single mechanical sensor. It connects to the air damper. If the temperature of the coolant reaches a maximum, then the damper is covered. The combustion process itself ceases. By the same scheme, the reverse process occurs. Once the sensor has cooled down, it is transferred to the flap, which opens.
Thus, having studied the information about the main characteristics of the instruments, you can find the best option for yourself.